PEDOT:PSS is an aqueous solution of a high molecular weight polymer with high conductivity. Depending on the formulation, aqueous solutions with conductivity ranging from 100 to 1000 S/cm can be obtained. As the name of the compound indicates, this product is composed of two substances: PEDOT and PSS. PEDOT is a polymer of EDOT (3,4-ethylenedioxythiophene monomer), and PSS is polystyrene sulfonate.
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PEDOT/PSS possesses excellent properties such as high conductivity, good light transmittance, and ease of processing, making it one of the most valued organic optoelectronic materials in recent years. It is also the only commercially available conductive polymer that can, to a certain extent, ensure both high light transmittance and low resistivity.
This material has found wide application in the field of organic optoelectronics, particularly in antistatic coatings, highly conductive coatings, organic solar cells, organic light-emitting diodes (OLEDs), biosensors, electrothermal/luminescent materials, hole transport layers in supercapacitors, and printed electronics.